Initialization - Avaya G700 Maintenance Manual

9 G700 and Media Module LEDs:

Initialization

The E1/T1 Media Module LEDs behave in the following manner during initialization:
• The Angel provides a visual indication of the board's status through the three board LEDs.
• During initialization the YELLOW LED is held off, while the RED and GREEN LEDs are on
during the entire initialization sequence.
• Upon power up or reset, if only the RED LED comes on, the Angel processor is dead or the board
is being held permanently in reset.
• Upon completion of the diagnostics and initialization, the GREEN LED turns off.
• If the initialization tests fail, the RED LED remains on.
• If the tests all pass, then all LEDs are extinguished until switch software starts using the board.
After a successful initialization sequence, the LEDs are controlled as follows:
• The Angel lights the YELLOW LED when there is at least one non-idle trunk. If switch software
sent a message to drive the clock sync signals, the YELLOW LED indicates this instead of the port
busy/idle status.
• The SPE may independently light and extinguish the three LEDs through downlink LED Control
messages, subject to the constraint that it may not turn off a YELLOW LED turned on by the Angel
as a result of port activity.
• If the NCE+ resets the board for any reason and does not release the board from reset, the RED
LED lights and the YELLOW and GREEN LEDs are held off.
Maintenance for S8300/S8700 and G700
555-234-101 — Issue 2 — October 2002
Media Module LEDs
295